Saxon/C is a cross-compiled variant of Saxon from the Java platform to the C/C++ platform. We have ported all the features of Saxon other than those like collations that are necessarily platform dependent. In particular it provides processing in XSLT, XQuery and XPath and Schema validation. It therefore gives capabilities to other languages that are strongly coupled to C/C++ such as PHP, Perl, Python, Ruby, node.js.
We offer the the commercial products in addition to the SaxonHE under Saxon/C: Namely Saxon-HE/C, Saxon-PE/C and Saxon-EE/C.